A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1017/S0022029915000448 http://hdl.handle.net/11449/160979 |
Resumo: | The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 008 and 021, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 050 and 027 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. |
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Repositório Institucional da UNESP |
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A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattleBayesian inferencedairy cattlegenetic parameterspersistencyThe objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 008 and 021, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 050 and 027 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle.Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Zootecnia, BR-14870000 Jaboticabal, SP, BrazilUniv Fed Mato Grosso, Inst Ciencias Agr & Tecnol, Grp Melhoramento Anim Mato Grosso GMAT, BR-78735001 Cuiaba, MT, BrazilInst Zootecnia, BR-14160900 Sertaozinho, SP, BrazilEmbrapa Gado Leite, BR-36038330 Juiz De Fora, MG, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Zootecnia, BR-14870000 Jaboticabal, SP, BrazilCambridge Univ PressUniversidade Estadual Paulista (Unesp)Universidade Federal de Mato Grosso do Sul (UFMS)Inst ZootecniaEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Pereira, Rodrigo Junqueira [UNESP]Ayres, Denise Rocha [UNESP]El Faro, LeniraVercesi Filho, Anibal EugenioVerneque, Rui da SilvaAlbuquerque, Lucia Galvao de [UNESP]2018-11-26T16:17:29Z2018-11-26T16:17:29Z2015-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article385-390application/pdfhttp://dx.doi.org/10.1017/S0022029915000448Journal Of Dairy Research. New York: Cambridge Univ Press, v. 82, n. 4, p. 385-390, 2015.0022-0299http://hdl.handle.net/11449/16097910.1017/S0022029915000448WOS:000364949200001WOS000364949200001.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Dairy Research0,573info:eu-repo/semantics/openAccess2023-11-18T06:13:39Zoai:repositorio.unesp.br:11449/160979Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-18T06:13:39Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle |
title |
A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle |
spellingShingle |
A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle Pereira, Rodrigo Junqueira [UNESP] Bayesian inference dairy cattle genetic parameters persistency |
title_short |
A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle |
title_full |
A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle |
title_fullStr |
A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle |
title_full_unstemmed |
A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle |
title_sort |
A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle |
author |
Pereira, Rodrigo Junqueira [UNESP] |
author_facet |
Pereira, Rodrigo Junqueira [UNESP] Ayres, Denise Rocha [UNESP] El Faro, Lenira Vercesi Filho, Anibal Eugenio Verneque, Rui da Silva Albuquerque, Lucia Galvao de [UNESP] |
author_role |
author |
author2 |
Ayres, Denise Rocha [UNESP] El Faro, Lenira Vercesi Filho, Anibal Eugenio Verneque, Rui da Silva Albuquerque, Lucia Galvao de [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Mato Grosso do Sul (UFMS) Inst Zootecnia Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) |
dc.contributor.author.fl_str_mv |
Pereira, Rodrigo Junqueira [UNESP] Ayres, Denise Rocha [UNESP] El Faro, Lenira Vercesi Filho, Anibal Eugenio Verneque, Rui da Silva Albuquerque, Lucia Galvao de [UNESP] |
dc.subject.por.fl_str_mv |
Bayesian inference dairy cattle genetic parameters persistency |
topic |
Bayesian inference dairy cattle genetic parameters persistency |
description |
The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 008 and 021, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 050 and 027 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-11-01 2018-11-26T16:17:29Z 2018-11-26T16:17:29Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1017/S0022029915000448 Journal Of Dairy Research. New York: Cambridge Univ Press, v. 82, n. 4, p. 385-390, 2015. 0022-0299 http://hdl.handle.net/11449/160979 10.1017/S0022029915000448 WOS:000364949200001 WOS000364949200001.pdf |
url |
http://dx.doi.org/10.1017/S0022029915000448 http://hdl.handle.net/11449/160979 |
identifier_str_mv |
Journal Of Dairy Research. New York: Cambridge Univ Press, v. 82, n. 4, p. 385-390, 2015. 0022-0299 10.1017/S0022029915000448 WOS:000364949200001 WOS000364949200001.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of Dairy Research 0,573 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
385-390 application/pdf |
dc.publisher.none.fl_str_mv |
Cambridge Univ Press |
publisher.none.fl_str_mv |
Cambridge Univ Press |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964981392834560 |